Reports about a TSMC production stoppage at 28-nm appear to have been originated by the aptly named Semi Accurate. We are checking into it.
http://semiaccurate.com/2012/03/07/tsmc-suddenly-halts-28nm-production/

@phoenixdave (and everyone else)-I've done some checking, and it's my assessment that this report about TSMC halting 28-nm production is inaccurate (not even semi-accurate).
Certainly, TSMC has had some hiccups at 28-nm. But halting production several weeks ago? I don't think so.
TSMC said its policy is not to comment on rumors. But a spokeswoman for the company, Elizabeth Sun, also told me via email that 28-nm production is normal and that customers are fully aware of TSMC's production status.
It was also pointed out to me when I asked around about this that both Xilinx and rival Altera have within the past week or so issued announcements about 28-nm products shipping.
Both use TSMC for manufacturing. Why would either of these companies trumpet 28-nm production if they knew that their foundry supplier had shut down it's 28-nm production lines? I don't see it.
http://press.xilinx.com/phoenix.zhtml?c=212763&p=irol-newsArticle&ID=1667836&highlight=
http://www.altera.com/corporate/news_room/releases/2012/products/nr-stratix5-production.html

I don't believe that AMD had 51 percent stake originally. Even if you go back to the initial announcement in October 2008, AMD was only going to have about 44 percent of what was then called "The Foundry Company," while ATIC owned by 56 percent.
http://www.globalfoundries.com/newsroom/2008/20081006.aspx

It is interesting because I remember that when they spun off Global Foundries they took a 51% share in it, and had the requirement of having a majority of board members. This was due to the cross licensing agreement, although this may have changed especially with the anti-trust settlement with Intel.